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WWUS20 KWNS 282101

SEL9

SPC WW 282101

DCZ000-DEZ000-MDZ000-NJZ000-PAZ000-VAZ000-CWZ000-290100-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 69

NWS Storm Prediction Center Norman OK

505 PM EDT Sun Mar 28 2021



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  District Of Columbia

  Delaware

  Eastern Maryland

  Southern New Jersey

  Extreme southeastern Pennsylvania

  Northeastern Virginia

  Coastal Waters



* Effective this Sunday afternoon and evening from 505 PM until

  900 PM EDT.



* Primary threats include...

  Scattered damaging wind gusts to 70 mph possible

  A tornado or two possible



SUMMARY...A narrow band of shallow convection along a cold front

will likely persist while moving eastward from Maryland and Virginia

into New Jersey and Delaware the remainder of this afternoon into

this evening.  A few damaging gusts will be the main threat, though

a brief tornado with embedded circulations cannot be ruled out.



The severe thunderstorm watch area is approximately along and 70

statute miles east and west of a line from 10 miles north of

Philadelphia PA to 50 miles south southwest of Dover DE. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU9).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



REMEMBER...A Severe Thunderstorm Watch means conditions are

favorable for severe thunderstorms in and close to the watch area.

Persons in these areas should be on the lookout for threatening

weather conditions and listen for later statements and possible

warnings. Severe thunderstorms can and occasionally do produce

tornadoes.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 68...



AVIATION...A few severe thunderstorms with hail surface and aloft to

0.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A

few cumulonimbi with maximum tops to 400. Mean storm motion vector

27040.



...Thompson

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